Centrifugal impacting apparatus and support therefor



2,981,490 CENTRIFUGAL IMPACTING APPARATUS AND SUPPORT THEREFOR FiledDec. 27, 1957 April 25, 1961 K. H. CONLEY 6 Sheets-Sheet 1 INVENTOR.Kari- ]f. Genie} ATTORNEYS April 1961 K. H. CONLEY 2,981,490

CENTRIFUGAL IMPACTING APPARATUS AND SUPPORT THEREFOR Filed Dec. 27, 19576 Sheets-Sheet 2 INVENTOR K fi Con a 3 BY u] L} AT TORN'EYS April 1961K. H. CONLEY 2,981,490

CENTRIFUGAL IMPACTING APPARATUS AND SUPPORT THEREFOR Filed Dec. 27, 19576 Sheets-Sheet 4 INVENTOR Kurt H. C'onle BY AT T ORNEYS ,April 25, 1961H. CONLEY CENTRIFUGAL IMPACTING APPARATUS AND SUPPORT THEREFOR 6Sheets-Sheet 5 m T N w m Filed Dec. 27, 1957 April 25, 1961 K. H.CONLEY' 2,981,490

CENTRIFUGAL IMPACTING APPARATUS AND SUPPORT THEREFOR Filed Dec. 27, 19576 Sheets-Sheet 6 INVENTOR Ii/5 TORNEYS CENTRIFUGAL IMPACTING APPARATUSAND SUPPORT THEREFOR Kurt H. Conley, Hamden, Conn., assignor, by mesneassiguments, to Entoleter, Inc., a corporation of Delaware Filed Dec.27, 1957, Ser. No. 705,563

7 Claims. (Cl. 241-275) This invention relates to centrifugal impactingapparatus comprising a motor-driven rotor for flinging continuouslymoving material outwardly by centrifugal force at very high speed and,more particularly, to the supporting structure for the motor and rotormechanism.

Machines for centrifugally impacting a flowing product have been usedfor a variety of purposes such as infestation destruction, milling ofgrain and the reduction of various types of materials in the chemical,metallurgical, and other industries. Such machines are prin-' cipallylimited in use by their ability to impart suflicient impact to thematerial to achieve desired results. Accordingly, there has been aconstant demand in many industries for a machine capable of impacting aflowing material with centrifugal forces far in excess of those whichexisting machines are able to produce. Obviously the larger the diameterof the rotor and the greater the speed at which it is driven, thegreater the centrifugal forces to be achieved with resultant violence ofimpact. However, as the size of the motor and rotor are increased, manyproblems arise, such as a proper rotary support for the rotor andsuitable bearing structure, the mounting of the motor so that it willnot only be supported reliably but may be easily installed and removedfor repair; all these parts should be firmly held in position by a framestructure which is not unduly costly and is easy to manufacture. Thepresent invention is concerned with a supporting structure for anunusually large centrifugal rotor capable of imparting velocities to aflowing product well in excess of 30,000 feet per minute and driven bymotors having a power rating of 150 horsepower or more.

Accordingly, the principal object of this invention is to provideapparatus for supporting a large centrifugal impacting rotor and anunusually large electric motor together with suitable drivingconnections therebetween. More particularly, a further object of thisinvention is to provide apparatus of the above-character having asupporting frame structure which is light and economical in constructionand yet sufficiently sturdy to support a very heavy motor, a largecentrifugal rotor and related driving equipment. A further object ofthis invention is to provide apparatus of the above character whereinthe motor may be easily installed or removed by an overhead crane Orother suitable lifting equipment such as is found in the averagemanufacturing plant. Another object of this invention is to provideapparatus of the above character with suitable mechanism forconveniently adjusting the driving connection between motor and rotor.An important object of this invention is to provide apparatus of theabove character wherein the supporting frame is comparatively light andhence inexpensive in proportion to the size of the motor and rotor;hence there is provided at reasonable cost a machine capable ofimparting much greater impacting forces than have heretofore beenpossible. A further object of this invention is to provide a machine ofthe above character wherein many of its components are. either standard.materials hired States Patent or parts readily available in the openmarket or modifications of such parts thereby further reducing cost ofmanufacture. A final object of the above invention is to provide amachine of the above character which will operate reliably for longperiods of time with little required maintenance and down time forrepair or other reasons. Other objects will be in part obvious and inpart pointed out hereinafter.

The invention accordingly comprises the features of construction,combinations of elements and arrangements of parts which will beexemplified in the construction hereinafter set forth and the scope ofthe invention will be indicated in the claims.

For a fuller understanding of the nature and objects of the invention,reference should be had to the following detailed description taken inconnection with the accompanying drawings in which:

Figure 1 is a front elevation of the machine as as sembled and ready foroperation;

Figure 2 is a top plan view of the machine shown in Figure 1,

Figure 3 is an enlarged fragmentary vertical section of the drive shaftand bearing support of the rotor and taken along the line 3-3 of Figure2,

Figure 4 is an enlarged fragmentary vertical section of the rotor andassociated parts and generally taken along the line 4-4 of Figure 3,

Figure 5 is a perspective view of the supporting frame structure for themotor and rotor assembly with those parts removed,

Figure 6 is a fragmentary vertical section on an enlarged scale of aportion of the structure shown in Fig 1 ure 3 and having to do with anair seal,

Figure 7 is a fragmentary enlarged vertical section taken along the line7-7 of Figure 5 and Figure 2 showing details of the rolling support forthe driving motor and Figure 8 is a fragmentary enlarged verticalsection taken along the line 88 of Figure 5 and Figure 2 showing detailsof the support structure for the impacting apparatus.

In general, the machine comprises supporting posts 10 having horizontalhollow beams 12 and 14 connected thereto as will be apparent from theconsideration of Figures 1, 2 and 5. The motor is supported by anglesupports 16 and 18 resting on beams 12 and 14 by rolls 20 (Figures 1 and5) as will be more fully described hereinafter. The motor mountinggenerally indicated at 22 is suspended from supports 16 and 18 and themotor generally indicated at 24 is suitably bolted thereto with itsdrive shaft 26 (Figure 1) extending vertically therefrom. A pair ofspaced girders generally indicated at 28 and 30 (Figures 2 and 5) areconnected to beams 12 and 14 and traverse the space therebetween tosupport the rotary impacting apparatus as can be seen in Figures 1 and2. More particularly, the impacting apparatus includes a cover plategenerally indicated at 32 bolted to beams 12 and 14 and the impactingrotor 34 rotatably suspended beneath cover plate 32 which is in turnconnected to a drive shaft generally indicated at 36 (Figures 1 and 3)rotatably supported in bearings 38 and 40 (Figure 3).

As is readily apparent in Figure l, shafts 26 and 36 are provided withpulley members 42 and 44 connected by belting generally indicated at 46.A turnbuckle 48 is connected to motor mounting 22 (Figure l) and thebearing casing generally indicated at 50 of the rotor 3 generallyindicated at 54. As best seen in Figure 4,

the rotor includes a bottom plate generally indicated at 56 with acentral hub portion 58 fastened to shaft 36. An upper ring 60 isconnected to plate 56 by way of a plurality of circumferentially-spacedimpactors 6 2. l Aplurality of target impactors 64 depend from coverplate 32 being concentrically disposed with and spaced from rotor 34.Cover plate 32 has product inlet openings 66:: and 66b (Figure 4) and anannular ring 68 depends therefrom adjacent the inner edge of rotor ring60. Product inlet chutes 72 and 74 diverge upwardly and fit intoopenings 72a and 74a (Figures 2 and 4) of top plate 75.

- In this machine rotor 34 is designed to be not only unusually largebut to be driven at excessive speeds. For example, in the existingcommercial machine of this. type, the rotor is 40 inches in diameter. Itis to be understood, however, that similar results well within the scopeof this invention may be achieved with larger 7 or smaller rotors.- Theconstruction to be described is also capable of driving this rotor atunusually high speeds. For example, the 40 inch rotor may be driven at3500 rpm. by a 125 horsepower motor giving it a capacity in excess of250,000 pounds of processed material per hour. It will be apparent thatthe motor 24 drives rotor 34 via pulleys 42 and 44 and belting 46 whilethe fiowing product is directed down upon the hub portion 58 of rotor 34through chutes 72 and 74. As the individual particles hit the bottomplate 56 of the rotor, they shoot outwardly under the impetus ofcentrifugal force and achieve very high speeds as they are hit by theimpactor 62 and shoot outwardly and tangentially to hit target impactors64 and the violence of this impacting action is very great indeed. Afterthis the product falls by gravity downwardly'through casing 54 and awayfrom the machine through suitable ducting (not shown). The problemsattendant to such high speed operation involving very large capacitiesand high impact values of individual particles are concerned principallywith the supporting structure which must support a motor of highhorsepower and great weight together with the rotor which must be heavyand rugged to withstand the punishment naturally from the machineoperation. These parts must be mounted in such manner as to be verystable and free from any sub stantial vibrating effect which mightresult in rapid deterioration. This problem of support could be solvedby the use of very heavy and sturdy structural supporting parts, but inso doing the cost of the resulting equipment increased to such an extentthat the necessary capital investment for such machinery might not beworth the possible highly desirable results which may be achieved bythese high impact forces. Accordingly, the principal object of thisinvention is to provide supportiugstructure for a motor and rotormechanism which can achieve these desirable high velocity impact resultsat a cost within the reach of the average processing manufacturer.

Turning now to the details of the machine embodying this invention, theposts 10 include foot plates 10A which may be suitably bolted orotherwise secured to the flooring of the plant where the machine is tooperate. As best seen in Figures 1 and 5, the hollow beams 12 and 14 arewelded or otherwise secured to shell plates 76, bolted to posts 10 bybolts 78. Thus beams 12 and 14 form the basic and only support for thedriving and driven mechanism, i.e., the motor and rotor and associatedstructure which are supported on posts 10. These beams and associatedstructure to be described must support a very heavy motor driving arotor at excessive speeds which necessarily involves compensation fornumerous heavy stresses on the beams. Accordingly, it is necessary toemploy unusual mechanical expedients to strengthen the relatively lightmaterials used in the beamsto'accomplish these purposes economically. r7

Accordingly; the girders 28 and 30 not only act to support the entirerotor and associated assembly, but also in a large measure strengthenthe supporting and carrying function of the beams 12 and 14. Thus thesegirders 28 and 30 comprise top straps and 82 which traverse and rest onbeams 12 and 14 (Figures 2, 5 and 8) and which are welded or otherwiseconnected to angle beams 84 and 86 (Figures 1, 5 and 8). Moreparticularly, the straps 80 and 82 are welded to upper horizontalportions 84a and 86a (Figures 5 and 8) of beams 84 and 86 and thevertical portions 84b and 86b are welded or otherwise connected to theinner sides 12a and 14a of beams 12 and 14. Finally, the bottom or lowerhorizontal portions 840 and 86c are also welded or otherwise secured tothe inner sides 12a and 14a of beams 12 and 14 with bottom straps 87 and89 connected thereto. Consequently, girders 28 and 30 form a very firmreinforcement for all stresses of the rotor mechanism mounted thereonnot only as imparted through the high speed of the rotor but alsothrough the driving connection of the heavy and powerful motor 24(Figure 1). Furthermore, the hollow beams 12 and 14, which are rigidlyconnected to legs 10, further serve to strengthen the entire supportingstructure against stresses and vibrating forces.

Referring to Figures 1 and 2, horizontal holders 88 extend inwardly fromthe inner sides 12a and 14a of beams 12 and 14 and the cover plate 32(Figures 1 and 4) is adjustably supported by bolt and nut structuresgenerally indicated at 90 of any suitable and well known design so thatin assembly the horizontal location of the cover plate and'associatedstructure may be readjusted with ease. In operation, there are twistingand shearing forces applied to plate 32 and structures 90 are designedto transmit these forces into the main frame where they are absorbed.Accordingly, from a consideration of Figures 1, 2 and 4, it will be seenthat the cover plate is supported by the holders 88 on the beams 12 and14 which are reinforced by the girders 28 and 30 and the cover plate hasdepending therefrom ring 52, casing structure 54 as well as thestationary target impactors 64 (Figure 4).

The top plate 75 is secured to girders 28 and 30 (Figures l and 2) bybolts 94 and, as previously noted, chutes 72 and 74 (Figure 4) fit intoopenings 72a and 74a of plate 75. An annular ring depends from the loweredge of ring member 52 and a ring part 102 fits therein (Figure 4) andis connected to the upper edge of casing structure 54, a sealing gasket101 being provided above ring part 102. As can be seen in Figure l, aplurality of clamps 104 are pivotally connected to ring member 52 andscrews 106 are threaded therein to press against ring part 102 tothereby releasably maintain casing structure 54 in sealing relation withgasket 101. Thus cover plate 32, which is adjustably supported onholders 88 by bolt and nut structure 90, also supports ring member 52and easing structure 54 in the position shown in Figure 1. These partsare thus supported on beams 12 and 14 by sturdy and simple structure andmay be adjusted and removed with ease.

Referring now to Figure 3, a casing 108 has an annular flange 108aresting on top plate 75 and depending therefrom to support bearing 38 ina manner to be described in detail. Thus, casing 108 has an upper an-.nular shoulder 108k on which rests an annulus 110. A collar 112 has anupper annular flange 112a resting on an annular shoulder 108s of casing108 and a lower shoulder 11219 of collar 112 which supports the outerraces 11.4 and 116 of bearing 38. Inner races 118 and 120 of bearing 38rest beneath a shoulder 122 on shaft 36 and are held thereagainst by asleeve 124v on the shaft, an annular guard 125, a collar 127 and a nut129 threaded on the shaft; thus the inner races are firmly heldimposition by nut 129. v

still referring to Figure'fi bearing casing 50 has an annularbearingsupport generally indicated at 126 resting on its upper edge by way ofannular flange 126a. The outer race 128 of bearing 40 rests on anannular shoulder 1261; while the inner race 130 thereof rests on ashoulder 132 of the shaft 36. A collar 134 on the upper end of shaft 36rests against the upper edge of inner race 130 with an annular guard 131thereabove, the assembly being held in position by a nut 133 threaded tothe shaft. A cover plate 136 rests upon hearing support 126 and issecured thereto by bolts 127; it also has an annular ridge 136a restingon the upper edge of outer race 128. Thus, the upper bearing is securedin position to rotatably support the upper end of the shaft 36immediately beneath the pulley 44 (Figure 1). There is preferablyprovided a lubricating system for bearings 38 and 40 which is of aconventional mist type, including piping generally indicated at 140 and142 connected to chambers 144 and 146 respectively immediately abovebearings 40 and 38. The lubricant constantly infiltrates the bearing anddrops into drainage chambers 148 and 150 connected to drainage pipes 152and 154.

The details of the rotor construction form no part of the presentinvention but will'be apparent from a consideration of Figure 4. Thus,impactors 62 each include bolts 156 and sleeves 158 preferablyinterposed between rings 160 and 162; these rings maybe convenientlyreplaced when worn; Accordingly, the entire assembly, including ring 60,may be tightened up and made secure simply by tightening bolts 156.Thetarget impactors are held in position by bolts 164 threaded into aring 167 and cover plate 32. Thus, as can be seen in Figure 4, rotor 34is free to rotate with shaft 36 and, as the product feeds down on hubportion 58 thereof, by way of chutes 72 and 74, it moves outwardlyrapidly under the impetus of centrifugal force to be impacted violentlyby impactors 62 and against target impactors 64, after which it fallsdown through the casing- 54 to exit from the machine.

It is highly desirable to drive the rotor 34 at very high speeds, and todo so it is necessary to have a large electric motor. Large electricmotors are very heavy and, when suspended in a driving position as shownin Figure 1, they usually require heavy supporting construction withattendant heavy expense. As previously noted, one of the principalobjects of this invention is to support such a heavy motor in drivingposition on a relatively light frame where it may be convenientlyinstalled and whereby its driving connection with the rotor may beeasily adjusted. The construction for accomplishing this purpose willnow be described.

Angle supports 16 and 18 have horizontal portions 166 and 168 (Figure 2)and vertical portions 170 and 172 (Figure As can be seen in Figure 5,horizontal portions 166 and 168 are supported on rolls 20 in a manner tobe described with reference to Figure 7. The construction of the fourrolls and associated structure is preferably identical and thereforeonly one will be described in detail. Referring to Figure 7, a track bar174 has a ridge 174a engaging the bottom surface of horizontal portion168. There is sufiicient play in these parts so that track bar 174 isself-adjusting and may swivel about ridge 174a in a manner to bedescribed. Rolls 20 have flanges 20a and 2% adjacent the opposite edgesof track bar 174 and a bottom track bar 176 is suitably secured to beam12. As previously noted, beams 12 and 14 may be economically secured toposts via shell plates 76 through welding. More particularly, the beamsmay be welded to plates 76 and the plates bolted to the posts. Suchwelding will accomplish this purpose nicely but the dimensions andrelative locations of the assembled parts cannot be held within closetolerances thereby. Thus, the tops of beams 12 and 14 may not behorizontally parallel or in alignment, i.e., in the same plane.Accordingly, if the whole supporting structure is rigid, theunder-surfaces of the angle supports 16 and 18 may not be parallel withthe upper surfaces of the beams 12 and 14, which, under normalcircumstances, would make fora very poor and insecure motor support.However, in practice, due to the self-adjustability of the track bars174, any expected departures from desired dimensions are compensated forand, in practice, it is found that these plates align themselves, therolls and the beams, so that a perfect linear rolling contacttherebetween is maintained.

As previously noted and as will be apparent from a consideration ofFigures 1, 2 and 5, it is important to support and maintain the motor 24in a rigid vertical position so that there will be no deviation in theangle or distance between the pulleys 42 and 44 (Figure 1); mounting 22(Figures 1 and 5) and its associated structure is particularly importantin accomplishing this result. Motor 24 is preferably secured to mounting22 by bolts generally indicated at 178 and, thus, the mounting 22 mustbe held in a rigid, substantially vertical position as can beappreciated by a consideration of Figure 1 showing the driving anddriven parts of this apparatus. Referring specifically to Figure 5,mounting 22 includes side plates 180 and 182 rigidly connected tovertical portions 171) and 172 of angle supports 16 and 18; Side plates180 and 182 are connected at their bottom ends by a bar 184 and, furtherhorizontal support therefor is provided by bars 186 and 188 (Figure 5)interconnected by a plate 1911 As best seen in Figures 2 and 5, asupporting plate 192 straddles side plates 180 and 182 as well as bars184 and 186 and 188. The motor 24 (Figure 1) is bolted to plate 192 andhence mounting 22 supports the full weight of the motor in itsvertically disposed position. There fore, mounting 22 needs considerablesupport against horizontal stresses in directions contrary to the axisof the motor shaft 26 and this is provided by certain reinforcingelements which will be apparent from a consideration of Figures 1, 2 and5.

More particularly, these reinforcing elements for the motor mounting 22comprise strips 194 and 196 con: nected to plate 192 and horizontalportions 166 and 168 respectively of angle supports 16 and 18. As can beseen in Figures2 and 5, strips 194 and 196 extend diagonally outwardlyfrom mounting 22 thereby to provide substantial reinforcement against avertical displacement of side plates 1% and 182 and, more particularly,the motor mounting 22. Still referring to Figures 2 and 5, additionalangular reinforcing plates 198 and 2410 are welded or otherwiseconnected to side plates 181} and 182 from whence they diverge outwardlyand are connected to horizontal portions 166 and 168 thereby furtherreinforcing mounting 22 against stresses encountered in operation.

A pair of clamping plates 201 and 263 are connected to beams 12 and 14respectively (Figures 2 and 5) to clamp against horizontal portions 168and 166 of angle supports 16 and 18. Inasmuch as the structure ofclamping plates 201 and 203 is preferably identical, only plate 201 willbe described in detail. As can be seen in Figures 1, Z-and 5, plate 261has legs 201a connected to beam 12 and a top portion 2010 extending overhorizontal portion 168 of angle support 16. The plate is held againsthorizortai portion 168 by bolts 2911; extending from beam 12 and nuts201d. Thus, the motor mounting may be adjusted by way of turnbuckle 48(Figure 1) after which the clamping plates 201 and 203 may be brought tobear upon the mounting by tightening nuts 201d. Thus, the mounting isheld against any vertical displacement and the motor is held in a steadystate during operation.

It will now be apparent that mounting 22 is reinforced substantiallyagainst stresses in all directions, not only by the connection of sideplates 180 and 182 with the vertical portions and 172 of angle supports16 and 18, but also by the diagonally disposed supporting andreinforcing strips 194, 196, 198 and 200. Thus, not only is the motorsupporting structure self-aligning to allow for deviations in tolerancesduring manufacture by way of structure shown and described with respectto 7 Figure 7, but also the motor support 22 is substantially reinforcedagainst any stresses displacing forces aimed against diversion of themotor shaft 26 from the desired position. The motor is thus firmlypositioned on beams 12 and 14 and held in any desired driving positionby the turnbuckle 48 as shown in Figure 1.

From the foregoing description, it will be obvious that the combinedweight of the heavy motor 24 and its massive mount 22 would createexcessive friction if some orthodox sliding contact were provided foradjusting the driving position of mount 22. Therefore, a further purposeof using the rolls 20 acting in contact with their track bars 174 and176 is to provide an antifriction support for mount 22 so that properadjustment of the driving position of the motor shaft 26 may be madewith ease by means of turnbuckle 48.

So that mount 22 may be retained in close movable alignment with beams12 and 14 without resorting to comparatively expensive machinefinishing, four alignment screws 181 are provided, which are threadedthrough each end of vertical portions 170 and 172. They may be adjustedto clear slightly the inner faces of beams 12 and 14. After adjustment,screws 181 may be permanently fixed by suitable lock-nuts 183.

Accordingly, it will be seen that themotor 24 is held in a firm andsteady vertical position (Figure l) by the mounting 22 and supportingstructure as just described, and also the rotor is firmly supported withrespect thereto by way of straps 87 and 89 firmly fixed to thehorizontal portions 12b and 14b of the beams 12 and 14 and furtherinterconnection by way of angle beams 84 and 86. All of these partsincluding the casing 50 (Figure 1), top plate 75 and lower horizontalportions 840 and 86c of beams 80 and 82 are firmly secured to adjacentportions of the beams 12 and 14, preferably by welding, to provide astrong unitary structure fully capable not only of holding andsupporting the rotor and associated elements including cover plate 32,ring 52 and casing 54 but also the bearing structure enclosed in casing50 (Figure 3) and other related apparatus,

To prevent leakage of contaminating material from the rotor casing,structure is provided for an air-back-flow action as will be apparentfrom a consideration of Figures 3 and 6. Thus, a ring-like member,generally indicated at 202, is suitably secured to cover plate 32. Ring202 has formed therein a passage 206 leading to an annular groove 208formed in ring 202. A collar portion 202a of ring 202 is disposedimmediately above groove 208 and is contiguous with sleeve 127, andprovided with grooves 210a, 210=b and 2100. The various parts sodimensioned that there is slight clearance (exaggerated in the drawings)between collar 127 and collar portion 202a. The dimensions of theseclearances are such that as air under pressure enters passage 206 viapipe 216 it encounters more resistance by way of the grooves 210a, 21%and 2100 than by way of the clearance between ring 202 and sleeve 127.Thus, the major portion of the air entering passage 206 follows the pathof the arrows downwardly toward and into the interior of the rotorcasing thereby preventing movement of any particles from this casingupwardly to the outer space where it might be hazardous or damaging.

Accordingly, it will be seen that a highly successful and practicalimpacting apparatus has been provided. Such apparatus is not onlyeconomical in construction to reduce the initial capital expendituretherefore but may be easily operated and maintained. Further, it iscapable of achieving remarkably high impact speeds due to its ability toimpart high centrifugal forces resulting froin the high driving speedand size of the rotor.

It will thus be seen that the objects set forth above, among those madeapparent from the preceding description, are efiiciently attained and,since certain .changes maybe made in the above construction withoutdeparting from" the scope ofthe invention, it is intended that allmatter contained in the above description or shown in the accompanyingdrawings shall be interpreted as illustrative and not in a limitingsense.

I claim:

1. In apparatus of the character described, in combination, a supportingbase including legs and a pair of spaced horizontal beams connectedthereto, each of said beams having a flat upper surface portion, rotaryimpacting equipment mounted on said beams including a drive shaft and apulley extending upwardly therefrom, a motor supporting frame having twofiat lower surface portions, a plurality of rolls interposed betweensaid upper and lower surface portions frame and to rollably support saidframe on said beams said rolls being free to roll between said surfacesin a generally horizontal direction upon relative movement between saidsupporting frame and said base, means at the ends of said rolls forpreventing substantial axial movement thereof, vertical members mountedon said two lower surface portions for restraining the horizontalmovement of said rolls, a motor secured to said frame, said motor havingan upwardly extending drive shaft, and a pulley connected to said driveshaft and disposed in horizontal alignment with said first mentionedpulley to be drivingly connected thereto by suitable belting.

2. The combination defined in claim 1 in which said frame includes anupper section extending above said spaced beams constructed to receivemeans for connecting said motor on one side thereof and to receive meanson the other side thereof for adjusting the spacing of said rotaryequipment from said frame together with reinforcing plates secured tosaid upper section.

3. In apparatus of the character described, in combination, meansforming a horizontal frame including a pair of essentially fiat uppersurfaces, rotary processing apparatus suspended from said frame, meansforming a motor support on said frame including another pair ofessentially flat lowersurfaces, and rolls interposed between said pairsof surfaces, said rolls being free to roll between said surfaces in agenerally horizontal direction upon relative movement between said motorsupport and said frame, and means at the ends of said rolls forpreventing substantial axial movement of said rolls.

4. In apparatus of the character described, the combination of two pairsof legs, a pair of horizontally disposed substantially parallel tubularbeams connected to said legs, a pair of angle braces spanning said beamsin spaced relationship and rigidly connected thereto, rotary impactingapparatus rigidly connected to said angle braces, said rotary impactingapparatus having a vertically disposed upstanding drive shaft, a motormounting structure extending above and below and between said beams,said structure adapted to support a motor with its drive shaftvertically disposed, horizontal members rigidly connected to said motormounting structure and disposed above each of said tubular beams, lowertrack bars mounted to the top surfaces of said tubular beams, rollsresting on said lower track bars and free to roll thereon, and uppertrack bars mounted between said rolls and said horizontal members, saidupper track bars being adapted to pivot about an axis substantiallyparallel to said beams, whereby a motor may be conveniently mounted onsaid motor mounting structure and predeterminedly spaced from saidimpacting apparatus and the said shafts may be connected by appropriatedriving means.

5. In apparatus of the character described, in combination, meansforming a horizontal frame including a pair of essentially flat uppersurfaces, rotary processing apparatus suspended from said frame, meansforming a motor support on said frame which includes horizontal membershaving another pair of essentially flat lower surfaces, rolls interposedbetween said upper and lower surfaces, said rolls being free to rollbetween said surfaces in a generally horizontal direction upon relativemovement between said support and said frame, said motor supportincluding vertical sections adjacent said frame and -a vertical motormount connected thereto, and reinforcing plates connected to saidvertical sections at an acute. angle with respect to an edge of saidhorizontal members and mounted on said horizontal members in a generallyvertical direction.

6. In apparatus of the character described, in combination, a supportingbase including a pair of spaced beams, rotary impacting equipmentsuspended from said beams including a drive shaft and pulley extendingupwardly therefrom, a motor supporting frame, .a motor mounted on saidframe and secured thereto, said motor including an upwardly directeddrive shaft, flanged rolls between said frame and said base to rollablysupport said motor, smooth-surfaced track bars mounted on said beamsbeneath said rolls and between said flanges, and smooth-surfaced trackbars between said rolls and said frame, said latter bars beingconstructed to pivot substantially about their longitudinal axes therebyto permit their lower surfaces to maintain substantially constantengagement with said rolls between said flanges.

7. The apparatus according to claim 6 wherein said latter bars areconstructed to have respective ridges formed in the centers of theirupper surfaces for enabling said pivoting action and wherein said framebears upon said ridges.

References Cited in the file of this patent UNITED STATES PATENTS MarksMay 29, Bordeleau Aug. 6, Williams Aug. 24, Hey Dec. 28, Marsna Mar. 2,Pochobradsky Sept. 13, Borton Jan. 14, Rowe May 31, Mason Oct. 22, ClineDec. 6, Lessmann Nov. 12, Henry May 20, Thurman Oct. 10, Moore Apr. 22,Hargrove June 17, Knoll Dec. 8, MacLeod Apr. 5, Sloyan Sept. 11, LongOct. 22, Dodds et al. Mar. 24,

FOREIGN PATENTS Sweden Apr. 21, Great Britain July 5,

France Oct. 22,

